边坡稳定分析的萨尔玛模式及其应用

Rock-mass slope stability's Sarma analysis method to take into account earthquake force and its application

分析了萨尔玛方法能考虑边坡震动效应的优点和震动效应的表达方法,指出该方法与其他方法的区别。推导了萨尔玛方法在边坡稳定性系数的计算格式,计算程序和方法。利用该方法分析了某公路斜坡在考虑相邻采石场爆破震动时的稳定性系数,并将该系数与不考虑震动因素时的情况进行了对比,二者相差34.3%。表明在分析中,考虑震动因素是必要的,采用萨尔玛方法的分析结果更全面。

The Sarma method, which could take the merit of slope vibration effect and the expression means of vibration effect into account, with the difference contrast to other methods were analyzed firstly. In order to calculate the stability coefficients of slope, the calculate format, procedure and method of Sarma method were also deduced. Then, stability coefficients of a slope sites in a certain road was analyzed by the method considering vibration caused by dynamiting in the neighbor quarry, and the results was contrasted to the situation didn＇t involve the vibration factor, which indicates that the two have the distinction with 34.3%. The conclusion can be drown that, it＇s necessary to consider vibration factor and it＇s more suitable to analyze it with Sarma method.